发明名称 |
Battery impedance detection system, apparatus and method |
摘要 |
Various aspects of the present disclosure are directed to monitoring battery cells. In accordance with various embodiments, an energy storage cell apparatus includes a current injection circuit that separately inject current into individual ones of a plurality of battery cells that store energy, and an impedance-detection circuit detects an impedance characteristic of each of the plurality of battery cells in response to the injected current. A filter circuit receives impedance data regarding the detected impedance characteristic and separates low-frequency components of the impedance data from high-frequency components of the impedance data. A memory circuit stores data corresponding to high-bandwidth data including both the low-frequency components and the high-frequency components, and an access circuit provides the low-frequency components for the plurality of battery cells to a battery pack controller. The access circuit further accesses and provides the stored high-bandwidth data for a subset of the individual battery cells to the battery pack controller based upon available bandwidth for communicating the high-bandwidth data. |
申请公布号 |
US8648602(B2) |
申请公布日期 |
2014.02.11 |
申请号 |
US201113150983 |
申请日期 |
2011.06.01 |
申请人 |
VAN LAMMEREN JOHANNES PETRUS MARIA;NXP B.V. |
发明人 |
VAN LAMMEREN JOHANNES PETRUS MARIA |
分类号 |
G01N27/416 |
主分类号 |
G01N27/416 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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